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Finding the Fourth Proportional to 3,258, 4,496.31 and 1,861.02

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Solution

The fourth proportional to 3,258, 4,496.31 and 1,861.02 is: 2,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258 : 4,496.31 = 1,861.02 : x
  2. Step 2: Convert to fraction form
    3,258/4,496.31 = 1,861.02/x
  3. Step 3: Cross multiply
    3,258x = 4,496.31 × 1,861.02
  4. Step 4: Simplify right side
    3,258x = 8,367,722.84
  5. Step 5: Solve for x
    x = 8,367,722.84/3,258
  6. Step 6: Final answer
    x = 2,568.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.